Thomas jack



Y' (No Model.)

T. JACK.

GUARD PoR GIRGULAR sAWs.

Patented Aug. 1, 1882. .H LM

IUI

UNITED STATES PATENT OFFICE.

THOMAS JACK, OF AUBURN, NEW YORK.

GUARD FoR CIRCULAR sAws.

SPECIFICATION forming part of Letters Patent No. 261,928, dated August 1, 1882, Application tiled May 27, 1882. (No model.)

To all whom it may concern:

Be it known that I, THOMAS JACK, of Au.-

burn, in the county of Cayuga and State ot'` New York, haveinvented certain new and useful Improvements in Safety-G11ards; and I do hereby declarethatthet'ollowing is afull, clear, and exact description ot' the invention, which will enable others skilledin the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which i'orm a part of this specification.

Figure l is a perspective view. Fig. 2 is a longitudinal vertical sectional View, and Fig. 3 is a top plan.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to guards for circular saws and Shapers; and it consists in certain improvements in the construction of the same, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, A represcnts the frame, bed, or table, having a slot, B, to accommodate the circular saw C, which is'journaled in suitable bearings under said table. D D represent the shaper-knivesi E is the saw shield or guard, the sides ot which are constructed each of two pieces, F F, having slots G, adapted to register with cach other, so as to receive a bolt, H, having a nut, I, by tightening which the said pieces may be securely connected after being extended so as to tit over the saw to which the shield is to be applied. The ends of the pieces F have laterally-projecting end pieces, J, which arelikewise provided with slots K, to receive bolts and nuts L M, by which the parts may he secured together after being adjusted as desired.

N N are brackets secured to an upright, O, or to the wall ofthe work-shop, or to a hanger pendent from the ceiling, or in any other po sition which may be found suitable and convenient. J ournaled in the said brackets is a shaft, P, having a pinion, Q, engaging a vertically-slidin g rack, E, which may be adj usted to any desired position by turning shaft P by means lof its crank S. The shaft l? is also provided with a pinion or ratchet-wheel, T, to

engage a stop-pawl, U, by which it may be retained in any position to which it is adjusted.

4 The lower end of the rack it has aforwardlyextending bracket, V, provided with a slot, W, to receive a bolt, X, having a nut, Y. Z is an angular plate or bracket, having at one end a slot, A', by which it is adjustable upon the bolt X. At its other end the said plate has a slot, B', to'receive a bolt, C', having nut D'.

E' E' are angle-plates slotted at both ends, so as to be adjustable iipon the bolts H and C', respectively, thus connecting Athe saw-guard with the adjustable bracket or plate.

F' is an arm having a slot, G', so as to be adjustable upon the bolt X, and provided at its front end with another slot, H', to receive a bolt, I', by which slotted angle-plates J', carrying curved guards K' for the shaperknives,.may be properly adj usted.

Secured upon the bolts L, at the rear end of the saw-guard, is a plate, L', having a narrow curved guard, M', extending down through the slot B in the frame, so as to guard the saw under said frame.

The operation and advantages of my invcn tion will be readily understood.`

When, as is frequently the case, the Shapers and circular saw are used together in the same frame the entire set of guards may be used. When the Shapers or circular saw are used by themselves the guards not needed may be dispensed with.

Having thus described my invention, I claim and desire to secure by Letters Patent ot' the United Statesl. The herein-described adjustable guard for circular saws, consisting of the side pieces, F, having slots G, and laterally-projecting ends J, having slots K, the angle-plates E' E', slotted at both ends, the plate L', having narrow curved guard M', and the connecting bolts and'n'uts, as set forth.

2l The combination, with the herein-described circularsaw guard, of the bracket` Z, slotted at both ends, the rack R, having slotted bracket V, suitable connecting-bolts, and mechanism for adjusting the rack R, as set forth.

3. The combination of the rack R, having In testimony that I claim' the foregoing as slotted rack V, mechanism for adjusting said my own I have hereto affixed my signature in rack, the slotted plate or bracket Z, the slotpresence of two witnesses. ted arm F', the slotted angle-plates J', having THOMAS JACK.

5 curved guards K', and the adjustable circuiar- Witnesses:

sar guard, all arranged andoperatingsubstan- GEORGE 0. PROPER, tially as set forth. JOHN WILLIAM HUTGEINsoN. 

